Copyright	(c) digitally induced GmbH 2020
Safe Haskell	None
Language	GHC2021

IHP.ErrorController

Description

Synopsis

displayException :: (Show action, ?context :: ControllerContext, ?request :: Request, ?respond :: Respond) => SomeException -> action -> Text -> IO ResponseReceived
errorHandlerMiddleware :: FrameworkConfig -> Middleware
newtype RouterException = RouterException SomeException
newtype InitContextException = InitContextException SomeException

Documentation

displayException :: (Show action, ?context :: ControllerContext, ?request :: Request, ?respond :: Respond) => SomeException -> action -> Text -> IO ResponseReceived Source #

errorHandlerMiddleware :: FrameworkConfig -> Middleware Source #

Middleware that catches exceptions and displays appropriate error pages.

This middleware should be placed near the top of the middleware stack so it can catch exceptions from controllers, routing, and other middleware.

newtype RouterException Source #

Wrapper for exceptions that occur during routing. This allows the error handler middleware to distinguish routing errors from action errors and display appropriate error messages.

Constructors

RouterException SomeException

Instances

Instances details

Exception RouterException Source #
Instance details Defined in IHP.ErrorController Methods toException :: RouterException -> SomeException # fromException :: SomeException -> Maybe RouterException # displayException :: RouterException -> String # backtraceDesired :: RouterException -> Bool #
Show RouterException Source #
Instance details Defined in IHP.ErrorController Methods showsPrec :: Int -> RouterException -> ShowS # show :: RouterException -> String # showList :: [RouterException] -> ShowS #

newtype InitContextException Source #

Wrapper for exceptions that occur during initContext. This allows the error handler middleware to show "while calling initContext" in the error message, helping developers locate the source of the problem.

Constructors

InitContextException SomeException

Instances

Instances details

Exception InitContextException Source #
Instance details Defined in IHP.ErrorController Methods toException :: InitContextException -> SomeException # fromException :: SomeException -> Maybe InitContextException # displayException :: InitContextException -> String # backtraceDesired :: InitContextException -> Bool #
Show InitContextException Source #
Instance details Defined in IHP.ErrorController Methods showsPrec :: Int -> InitContextException -> ShowS # show :: InitContextException -> String # showList :: [InitContextException] -> ShowS #